So, is "standard" here being used to differentiate something approved by an official standards body like ANSI/ISO vs. the IETF/RFC system? I can kind of see how

So, is "standard" here being used to differentiate something approved by an official standards body like ANSI/ISO vs. the IETF/RFC system? I can kind of see how that would make sense, since RFCs are just memoranda published by the IETF that happen to carry a lot of technical weight (v.s. the long, formal, arduous, and bureaucratic standardization process bodies like the ISO are known for). It's still weird to think though that by this definition TCP, IP, etc. aren't really standards. The other explanation that I can think of is that this is "not a standard" since this is just a working draft, and not an approved/numbered RFC, but clearly the draft here is the first step along that process.